# How many electrons in an atom could have these sets of quantum numbers?

## Question

How many electrons in an atom could have these sets of quantum numbers?

n = 3

n = 5 , ℓ = 1

n = 6 , ℓ = 1 , m ℓ = − 1

n=3 is basically all the electrons in the 3rd energy level, so

3s=2

3p=6

3d=10

so total equals 18 electrons

n=5, l=1, refers specifically to the 5p

p has 3 orbitals so it can fill a total of 6 electrons

n=6, l=1, ml=-1,

so this refers to the 6p and since we have ml it refers to the specific orbital.

ml refers to the formula: -l -> l.

so in this case -1,0,1 ; these three numbers correspond to the 3 orbitals in the p subshell, each one can hold 2 electrons,

Thus, in this case the answers is 2

Answered by Luv A: Great STEM tutor with lots of teaching experience + top 10% MCAT Score

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